论述了金属液作为压力铸造压力传递介质的实际情况；
The real circumstance of liquid metal as the pressure transfering agent during pressure casting was introduced.
该装置以压缩空气为介质进行信号传递和控制，并能根据需要调节检漏压力、流量和时间。
This device can transmit signal and control through the medium of compressed gas, and can adjust testing pressure, flow rate and time according to the automatic controlling requirement.
机动车制动液是机动车制动系统传递压力的介质，它的良好性能是车辆有效制动、安全行车的重要保证。
The brake fluid of vehicle is pressure-transferring medium of brake system in vehicle and is important assurance of effective brake and safety of driving of vehicle.
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